This paper provides a comprehensive overview of the recent advances in the field of wireless contactless sensing circuits and systems for healthcare and biomedical applications. In particular, special emphasis is made on wireless implantable devices, radar-based techniques to detect human motions, such as vital signs or gestures, wireless neural interfacing and prosthesis, and the characterization...
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A high-voltage-tolerant and power-efficient stimulator with adaptive power supply is proposed and realized in a 0.18-μm 1.8-V/3.3-V CMOS process. The self-adaption bias technique and stacked MOS configuration are used to prevent issues of electrical overstress and gate-oxide reliability in lowvoltage transistors. The on-chip high-voltage generator uses a pulse-skip regulation scheme to generate a ...
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This paper presents a low-noise, wireless neural recorder that has a frequency dependent amplification to remove electrode offset and to attenuate motion artifacts. The recorder has 2.5 GQ and 50 MQ input impedance at 20 Hz and 1 kHz for recording local field potentials and extracellular spikes, respectively. To reduce the input-referred noise, we propose a low-noise frontend design with multiple ...
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The spike classification is a critical step in the implantable neural decoding. The energy efficiency issue in the sensor node is a big challenge for the entire system. Compressive sensing (CS) theory provides a potential way to tackle this problem by reducing the data volume on the communication channel. However, the constant transmission of the compressed data is still energy-hungry. On the othe...
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Early detection of disease is essential for an efficient treatment. Bone loss can be detected and monitored by regular measurement of serum or urine C-terminal telopeptide of type 1 collagen (CTx-1). Therefore, rapid, portable, and low-cost point-of-care devices are highly desirable. In this paper, we have reported an Internet of Things (IoT)-based selective, sensitive, quick, and inexpensive devi...
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The purpose of this paper is to develop and validate a miniature system that can wirelessly acquire gastric electrical activity called slow waves and deliver high-energy electrical pulses to modulate its activity. The system is composed of a front-end unit and an external stationary back-end unit that is connected to a computer. The front-end unit contains a recording module with three channels an...
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We have recently found that our previously-developed atrial fibrillation (AF) detection algorithm for smartphones can give false positives when subjects' fingers or hands move, as we rely on proper finger placement over the smartphone camera to collect the signal of interest. Specifically, smartphone camera pulsatile signals that are obtained from normal sinus rhythm (NSR) subjects but are corrupt...
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With the growing attention at 60 GHz ISM band on millimeter-wave therapy for diseases treatment of sedative, anti-inflammatory actions or immune system stimulation, growing demand for new biomedical monitoring and treating systems with more bandwidth, high data rates and low power creates new challenges for 60 GHz body area network. Most smart wireless sensors wireless sensing operates on battery,...
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Wireless RF sensors are the building blocks of the next generation sensing techniques that are quite essential for the Internet of Things. In this paper, the RF system comprising of ultra-wideband transmitter-receiver antenna and highly sensitive planar sensor is proposed for wireless sensing of glucose and saline concentration, which are currently being used in various biomedical applications. Th...
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In the past decade, many efforts have been devoted to indoor localization solutions. While significant progresses have been achieved, short-range localization of passive moving objects in indoor environments remains a technical challenge, especially when available radio spectrum is limited. In this paper, we resolve this challenge by proposing a single-frequency continuous-wave Doppler radar senso...
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A noncontact measurement of the heart rate of a specific person using an X -band radar system with a four-element antenna array is presented. The system comprises a 2-D planar wide-beam antenna array with a four-channel network analyzer. The direction of arrival is estimated using the Capon method, and the directionally constrained minimization-of-power algorithm is then applied to the received si...
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Human motion recognition is crucial for surveillance, search and rescue operation, smart homes, and senior care. In daily life, there exists various kinds of human motions with widely different characteristics and meanwhile they also exhibit some clustering features, which make it difficult for recognition. In this paper, a multiple-layer classification method is introduced for comprehensive human...
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Unobtrusive measurement of vital signs is a research topic of increasing interest, both due to the advances in different technologies and the need for a more patient-centered healthcare. A limitation of such measurements is their sensitivity to motion artifacts, which challenges their use in daily life activities. In this paper, a novel system for the simultaneous acquisition of multichannel capac...
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Unmanned aerial vehicle platforms are ideal for remote life sensing applications including military, humanitarian, and post-disaster search and rescue operations. Doppler radar sensors can remotely detect human respiration vital signs to assess triage but any sensor motion will corrupt the signal. The respiration signal can be recovered by measuring the platform motion with a secondary radar and r...
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An electromagnetic model for heart rate and respiration rate detection using the scattered fields of incident plane waves on a dielectric model of a human subject has been developed. The model approximates the torso by an equivalent homogenous dielectric layer, and utilizes an accelerated parallel version of the multi-level fast multipole algorithm to speed up the computation. Non-contact measurem...
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A low distortion dc coupled CW radar system with high signal to noise ratio is capable of accurate representation of respiration in human subjects. We propose to test the hypothesis that a non-contact physiological radar monitoring system which measures and characterizes subtle body kinematics, can be made to resolve patterns accurately enough to recognize an individual's identity. This paper inve...
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IEEE Journal on Emerging and Selected Topics in Circuits and Systems information for authors

Aims & Scope

The IEEE Journal on Emerging and Selected Topics in Circuits and Systems publishes special issues covering the entire Field of Interest of the IEEE Circuits and Systems Society and with particular focus on emerging areas.